The Celtic midfielder Aiden McGeady will miss today's visit of Inverness in the Scottish Premier League with a knee injury.
The Parkhead medical team are monitoring his condition and he may require surgery. The Republic of Ireland international failed a fitness test before the midweek Champions League defeat at Aalborg after missing the previous five matches. The Celtic manager, Gordon Strachan, is also still without Massimo Donati (broken toe), Jan Vennegoor of Hesselink (groin) and Marc Crosas (hamstring).
The Inverness manager, Craig Brewster, meanwhile, hopes his players have learnt some harsh lessons from their 5-0 thrashing at Rangers earlier in the season. Brewster wants to see a huge improvement after his side conceded five goals in the first half on their last trip to Glasgow.
But Brewster's team travel south after a 2-1 win at Kilmarnock, which made them the first team in the SPL outside the Old Firm to have won four games on the road this term. "We have to use the experience of the Rangers game to make sure nothing like that happens again," Brewster said.
Rangers will be boosted by the return of Sasa Papac and Madjid Bougherra from injury for their lunchtime game at Hearts.